Liquid crystal display

Abstract

A liquid crystal display includes: a first substrate and an opposing second substrate; an alignment layer formed on the first substrate and the second substrate; and a liquid crystal layer interposed between the first substrate and the second substrate. The alignment layer includes a copolymer including a dianhydride monomer and a diamine monomer.

What is claimed is: 
     
       1. A liquid crystal display comprising: a first substrate and an opposing second substrate; a liquid crystal layer interposed between the first substrate and the second substrate; and an alignment layer disposed on the first substrate and the second substrate, the alignment layer comprising a copolymer formed by copolymerizing linear dianhydride monomers and linear diamine monomers comprising a linear dianhydride monomer represented by Formula 1 below, and linear diamine monomers represented by Formulas 2 and 3 below: 
       
         
           
           
               
               
           
         
         wherein in Formula 1, n is 0 or a positive integer; 
       
       
         
           
           
               
               
           
         
         and 
       
       
         
           
           
               
               
           
         
       
     
     
       2. The liquid crystal display of  claim 1 , wherein n is 0 or 1. 
     
     
       3. The liquid crystal display of  claim 1 , wherein the linear dianhydride monomers further comprise pyromellitic acid dianhydride (PMDA), 1,2,3,4-cyclobutane tetracarboxylic acid dianhydride, or a combination thereof. 
     
     
       4. The liquid crystal display of  claim 1 , wherein the liquid crystal layer comprises twisted-nematic liquid crystal molecules. 
     
     
       5. The liquid crystal display of  claim 1 , further comprising:
 a gate line disposed on the first substrate; 
 a data line disposed on the first substrate and intersecting the gate line; 
 a thin film transistor connected to the gate line and the data line; 
 a pixel electrode connected to the thin film transistor; and 
 a common electrode disposed on the second substrate. 
 
     
     
       6. The liquid crystal display of  claim 1 , wherein the alignment layer comprises the linear dianhydride monomers and the linear diamine monomers at a ratio of about 1:1.